I actually have'nt got em yet.Just looking for some feedback on the PROFORM brand.Should of been more specific.....sorry.Their on E-BAY with a "buy it now" price of $169, and a flat shipping charge of $17.50.Florida add another 6%.Your choice 1.5 or 1.6.

Crane Cams Blazer Aluminum Roller Rockers are about $170 from Jeg's I had purchased a set for my IROC's rebuild but they won't clear in the GM Performance Centerbolt Valve covers I bought so I swapped them for Crane Roller Tip Steel Rockers, I just didn't want to step down from 1.6 to 1.5 to have them clear :cool:

hortospe4x4 wrote:Will Most 1.6 rollers fit under the original valve covers?

I'm not sure on that one.I've heard though to be on the safe side when using 1.6 ratio rockers is to install screw in studs.I don't have any personal experience with that,just what I've heard.Maybe someone else knows more about it. Later :)

To 8T8IROC,Did you have to go to a longer push rod with those 1.6 rockers? If so how did you know what length to use? And you say they do clear "stock" center bolt valve covers? Also, what kind of difference did they make? Is the car still as "streetable"?

mnorton wrote:To 8T8IROC,Did you have to go to a longer push rod with those 1.6 rockers? If so how did you know what length to use? And you say they do clear "stock" center bolt valve covers? Also, what kind of difference did they make? Is the car still as "streetable"?

Yeah the car is still totally streetable. The pushrod length is going to depend on your cam. At first I decided to go with a Crane CompuCam and then I swapped to an LT4 Hot Cam, each cam needed a different length of pushrod. I don't have the exact number for HP but I know on the cam with 1.5 the int/exh are like 485/485 and with 1.6 its 525/525. So it makes quite a difference in getting "more" from the cam ;)

Can I just bolt the 1.6 steel roller tip rockers onto stock heads with a stock cam? Will I need different pushrods? Will the rockers still clear the stock center bolt valve covers? Will I need new valve springs?

My valve covers need new gaskets, and I figure why not go to 1.6 rockers while they're off the car?

You can just bolt them on, but of course the question is if your willing to tear into the car a bit more why not change more of the valvetrain? I have heard and read that many people recommend replacing the valve springs when you change cams/rockers, but is usually because they are all done at the same time. I also don't know if there are additonal considerations to keep in mind since you are planning on reusing quite a bit of the stock parts. I would recommend holding off until you also purchase a cam, and then do pretty much and entire top end rebuild of valvetrain :thumbsup:

Randy,I hear ya, and I keep going back and forth about that... My engine has 140K on it so if I start to tear into it I may as well build the whole thing. I would go with several upgraded parts, some head and port work too. That's a lot of coin... and a lot of work. Basically the car runs well, it doesn't blow smoke, but it would be nice to have a few more horses under the hood. Eventually I will build it, but for now I'd like to drive it. I'm spending a lot of coin getting new upholstery now, that should be done in a couple of weeks! I want to keep the outside appearence of the engine stock while upgrading the parts inside it.

mnorton wrote:Randy,I hear ya, and I keep going back and forth about that... My engine has 140K on it so if I start to tear into it I may as well build the whole thing. I would go with several upgraded parts, some head and port work too. That's a lot of coin... and a lot of work. Basically the car runs well, it doesn't blow smoke, but it would be nice to have a few more horses under the hood. Eventually I will build it, but for now I'd like to drive it. I'm spending a lot of coin getting new upholstery now, that should be done in a couple of weeks! I want to keep the outside appearence of the engine stock while upgrading the parts inside it.

I completely understand your dilema, all I can tell you is there is nothing going to be a good time to be without your Camaro :D What I mean is that it's difficult to tear into it and not be able to drive it, I would see if you can rebuild the entire motor if you believe that its about time for a rebuild. If not then do what you can and see if your happy with the results :hehe:

Friend of my handed me a box of CRANE roller rockers and said he couldn't use them. Well, turns out, I can't use them either since they are for BB Chevy. They are 7/16" 1.7 ratio rockers. He has a BB Chevy, but I have no idea what heads he has on it as the rockers are "too big?"

Anyway, looking at getting some rockers as well. Maybe sell these and use the money for ones I can use. :)